A new study out of Brazil links early or late menstruation onset to health struggles later in life. How the timing of your first period can influence your risk of obesity, high blood pressure and ...

A female’s first menstrual period, known as menarche, occurs during puberty. Menstruation indicates that the body is mature enough for reproduction. About 98% of girls begin their periods by age 15.

Lotus Kay started to feel depressed when she was 12 years old. But when she got her first period about a year later, a peculiar pattern emerged: Her depression symptoms would get worse the week before ...

Preparing your child for their first period—and roughly 40 more years of menstruation that follow—can feel like a big responsibility. But this milestone doesn't have to be overwhelming or awkward. In ...

Girls in the U.S. are getting their first period earlier than in decades past. Researchers say there are multiple factors causing early puberty, including obesity and environmental pollutants. Girls ...